You hit the gym four days a week. You eat healthy. But you’re still not quite where your doc says ya need to be. What gives? A recent study reports that it might just be your sleep habits.

If you’re genetically predisposed to weight gain or obesity, researchers may have just discovered the link you’ve been looking for. While exercise and diet are still the most important factors to attaining and maintaining a healthy weight (discuss that with your doctors, babes!), a new study shows that getting more sleep can lessen the impact genetics has on your weight,